Signor to george westing house



(No Model.) 3 Sheets-Sheet 1. W. STANLEY, Jr.

ELECTRIC GENERATOR. No. 349,615. Patented Sept. 21, 1886.

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(No Model.) 3 Sheets-Sheet 2.

W. STANLEY, Jr.

ELEGTRIG GENERATOR.

No. 349,615. Patented Sept. 21, 1886.

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(No Model.) 3 Sheets-Sheet 3. w. STANLEY, Jr.

- .ELEGTEIG GENERATOR.

No. 849,615. Patented Sept. 21, 1886.

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551 M mtozmeqo UNITED STATES PATENT OFFICE.

\VILLTAM. QTANLEY, JR, OF GREAT BARRIN plTOX, MASSACHUSETTS, AS- SlGNtllt TO GEORGE *ESTTNGHOUSF. JR, OF llTTllSll'llRtl, PA.

ELECTRIC GENERATOR.

CFBCIFICZJIIGI forming part. of'Letters Patent No. 349,635, dated September 21, 1886,

Application tiled February 10, 1986. Serial No. 191,104.

To (1,64 whonb it may concern:

Be it known that I, Wnuman STANLEY, Jr.. a citizen oft he United States, residing in Great Harrington, in the county of Berkshire and State of Massachusetts, have invented certain new and useful Improvements in Electric (lcrr craters, ol'whieh the following is a spccificze tion.

The invention relates to the class of apparatus employed for producing alternating elec tric currents.

The object of the invention is to provide a simple form of machine for n'odueing alternating electric currents, which shall have but few parts, and those so related as to be easily put together in constructing the machine.

The invention consists in forming the machinein substantially the following manner: A cylindrical casting is made having inwardlyprojecting arms. These arms cmist'itute cores. and coils of insulated wire, which are formed into suitable bobbins, are slipped over them. To retain the bobbins in position bands or rin s ot' non-magnetic material are pinned to the ends of the cores alter the coils have been placed upon them. The armature core con sists of a series of flat plates of soft iron, which are bound big-ether, but are preferably mag netically separated from. each other. These plates are formed with projectiuglugs. around which the wireofthe armature is wound. The wire is preferably applied by being laidin the spaces between the projections and across the side faces of the armature at the ends of the projections. The wire may be wound con tinuously about the periphery of the armature in the spaces bet ween the lugs in a zigzag direction, or it may be wound seyeral times about one lug. lbrming a complete bobbin. and then led to the next projection and wound about it. The collector-brushes are applied to two cylin drical eontact-surfaees carried upon the arma tureshat't' and insulated from each other. The

collectors are supported from the frame of the instrument. and are pressed toward their respective contact-surfaces by suitable springs.

In the accompanying drawings, Figure l is an end elevation of a machine embodying the improvements; and Fig. 2 isa front View of the No model.)

same, partly in section. Fig. 3 illustrates a modified form of armature.

Referring to the drawings. A represents a cyli ndri cal cast inghayi ng inward ly nrojeeting arms or cores (1. 1r. Upon thesecorestheie are slipped spools or bobbins of insulated wire. B B, &c. Two bands, O and C", of brass orother non-magnetic material of such size as to fit within the circle formed by the inner ends of the bobbins of wire are pinned to the respectiye cores, as shown at d It. These serve to hold the coils in position. Preferably one of these bands is applied at each side of thecores. The projecting ends of the field-magnet cores to u. are preferably cut away upon their oppo site t'aces or formed in parabolic curves. so that as the armature projections approaclrand recede there will be a steady increase of magnetic effect up to a certain point, and then a constant decrease, and thus there will be fluctnation in the current generated.

The arn'iature E consists of a series of plates, 6 c, &c., which are )I(.litl1ll' l magnetically separated from each otherby sheets of \"ulcan ized fiber, paper, or other suitable material. and bound together in any suitable manner. The armature is carried upon a shatt, E. The plates 6 c are constructed with a series of ra dial inojectionsf, and when bound together these projections lie side by side, and these projections together constitute the armature projections, about which. coils K, of insulated wire,are wound. The number of these projections may with advantage be the same as the number of cores (1 a. The coils K are formed by passing the wire across the face of the armature parallel with its axis, then downward upon one side in a radial direction, then in a. direction at) right angles to the axis, then ra- "dially from. the axis and again across the face of the armature to the other side. The wires so wound are preferablybound in position by means of suitable bands or rings, a )1, of nonmagnetic material. or by 'wire wound circuml'erentiall y upon the face of the armature.

The armature is carried upon the shaft E, which is provided with a d riving-wheel, M, and has its bearings in two supports, N and N These are preferably secured to the base-plate N by suitable bolts in any convenient manner.

One end of the series armature-coils is connected with a collector-plate, p, and the other end with a similar plate, 1). The currents are collected from these plates, respectively, by brushes P and P The former of these is carried upon an insulated rod or arm, 1-, which is supported in a lug, s, upon the upright N A spring, t, leads from the rod 0' to an adjusting-screw, n, carried upon the rod 0", and a similar spring, 25, is attached at one end to the arm 7", and at the other end to an adj ustingscrew, n upon a rod, r. By means of these the pressure of the collector-brushes against the collector-plates may be modified. The brush es are movable toward and from the plates by being loosely supported upon their respective supporting-rods; or they may be rigidly attached to the rods and thela-tterloosely mounted in their respective lugs.

In Fig. 3 a modification in the method of applying the wire to the armature is illustrated. This consists in applying it in a serpentine di rection, instead of winding each bobbin continuously.

I claim as my'invention- 1. An al ternate-current electric machine consistin g of a cylindrical frame having inwardlyprojecting arms or cores, bobbins of wire surrounding the respective cores, an armature within the circle of said cores, two collectorplates revolving with the armature wit-h which the respective terminals of the armature-coils are connected, collector brushes bearing against said plates, respectively, andyielding springs tending to draw said brushes toward each other and against the respective plates.

2. An armature-core for electrical generators, consisting of magneticall y-scparated laminze of iron having radial lugs, in combination with bobbins of wire surrounding the lugs, the wire composing the bobbins being wound upon the periphery of the armature in a serpentine direction and laid along the ends of the armature-core at the opposite ends of the alternate lugs. I

3. A fieldmagnet for electric generators, having a series of radial polar projections, the ends of which are formed in parabolic curves, in combination with an armature adapted to rotate within the field of said projections.

4. The combination, substantially as herei nbefore set forth, of the supporting-cyli nder, the radial cores projcctinginwardly therefrom, the bobbins of wire upon the cores, and the bands secured to the cores for holding the bobbins in position.

In testimony whereof I have hereunto subscribed my name this 28th day of January, A. D. 1886.

WILLIAM STANLEY, J R. \Vitnesses:

DANL. WV. EDG-ECOMB, CHARLES A. TERRY. 

